Recent content by jillpad

I'm grateful for your reply, Gasman. There are Honeywell motorised zone values on the heating and hot water circuits. Obviously the room thermostat problem only affects the heating side. Hot water is unaffected. How would I check that the MZV is the cause of the problem?

Thanks for the reply Mysteryman. The batteries are good.

During the past week when my Salus RT300RF calls for heat (receiver displays green light), my Mexico HE36 boiler sometime fires up, but mostly won't. I seem to be able to coax a fire-up by lowering the desired temperature setting on the Salus (thus causing receiver green light to go out)...